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The terrestrial Adephaga of Iowa (Part 1) by Fanny Chastina Thompson Wickham, 1895

The terrestrial Adephaga of Iowa by Fanny Chastina Thompson Wickham, 1895, Page 55

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ten segments, firsth to fourth gradually longer, fifth longer, gibbous poseriorly and emarginate with a slender tubercle on each side of the emargination, hooks one on each side, long, slender, directed upwards and forwards; segments sixth to ninth gradually narrowed, anal segment moderately long, truncate, opening terminal. Legs - anterior and posterior pair of equal length, the middle pair somewhat shorter. The coxae conical, prominent, nearly equal to the rest of the legs. The second piece seems to be composed of a connate trochanter and femur, the serparation indicated by an oblique impression and a feeble subangulation on the lower margin. The tibia is short, slightly conical and rather densely fimbriate, with a short tarsal piece from which arise somewhate long unequal terminal claws. There are nine pairs of spiracles. The anterior par are situated, one on each side, under the margin of the prothorax behind the base of the anterior coxae, much longer than the others. The other spiracles are in the abdominal segments
 
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